splutter vs emit

splutter is a noun but emit is not a noun.

Word	Noun	Adjective	Verb	Adverb
splutter	Yes	No	Yes	No
emit	No	No	Yes	No

As verbs, emit is a hypernym of splutter; that is, emit is a word with a broader meaning than splutter:

Other hypernyms of splutter include let loose, let out, utter.

splutter (noun)	emit (noun)
an utterance (of words) with spitting sounds (as in rage)
the noise of something spattering or sputtering explosively

splutter (verb)	emit (verb)
spit up in an explosive manner	expel (gases or odors)
utter with a spitting sound, as if in a rage	express audibly; utter sounds (not necessarily words)
	give off, send forth, or discharge; as of light, heat, or radiation, vapor, etc.